Professional Golfers' Earnings Two random samples of earnings of professional golfers were selected. One sample was taken from the Professional Golfers Association, and the other was taken from the Ladies Professional Golfers Association. At a = 0.10, is there a difference in the means? The data are in thousands of dollars. Use the critical value method with tables. PGA 446 4910 1147 1344 9188 8553 7573 375 LPGA 48 100 2029 76 122 Send data to Excel 466 4364 2921 5687 863 Use 1 for the mean earnings of PGA golfers. Assume the variables are normally distributed and the variances are unequal. OL

Professional Golfers' Earnings Two random samples of earnings of professional golfers were selected. One sample was taken from the Professional Golfers Association, and the other was taken from the Ladies Professional Golfers Association. At a = 0.10, is there a difference in the means? The data are in thousands of dollars. Use the critical value method with tables. PGA 446 4910 1147 1344 9188 8553 7573 375 LPGA 48 100 2029 76 122 Send data to Excel 466 4364 2921 5687 863 Use 1 for the mean earnings of PGA golfers. Assume the variables are normally distributed and the variances are unequal. OL

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Solve part (c) and (d) only. A manufacturer of plastic pipes uses a scale with an accuracy of of its range of to measure the mass of each pipe the company produces in order to calculate the uncertainty in mass of the pipes. In one batch of parts, the measurements are as follows: 2.90,2.95,2.96,2.92,2.95,2.94,2.96,2.97,2.98,2.91 (lb) Calculate (a) the mean mass of the sample. (b) the standard deviation of the sample and the standard deviation of the mean. (c) the total uncertainty of the mass of a single product at a 95% confidence level. (d) the total uncertainty of the average mass of the product at a 95% confidence level.
Ministry of economic development conducted a survey to determine why people go to trade shows. The respondents were asked to rate a series of reasons on a scale from 1 to 5, with 1 representing little importance and 5 representing great importance. One of the reasons suggested was general curiosity. Responses for 50 people from the electronics industry results in a sample mean of 1.96 and 50 people from the food industry results in a sample mean of 3.02 for general curiosity. Use the data and α = 0.01 to determine whether there is a significant difference between people in these two industries on this question. Assume the variance for the electronics population is 1.0188 and the variance for the food population is 0.9180. Clearly state your null and alternate hypothesis. State the decision rule. Show the calculation of the test statistic. Give your answer to 2 decimal places where appropriate. State the statistical conclusion and explain the result in context of the question.
You are testing the claim that the proportion of men who own cats is larger than the proportion of women who own cats. You sample 110 men, and 25% own cats. You sample 150 women, and 85% own cats. Find p (p-bar), as a decimal, rounded to two decimal places.
A large automobile insurance company selected samples of single and married male policyholders and recorded the number who made an insurance claim over the preceding three-year period. Z-value p-value Single Policyholders n₁ = 440 Number making claims = 88 a. Use a = 0.05. Test to determine whether the claim rates differ between single and married male policyholders. (to 2 decimals) (to 4 decimals) X Married Policyholders n2 = 840 Number making claims 126 We can conclude ✔ that there is the difference between claim rates. b. Provide a 95% confidence interval (to 4 decimals) for the difference between the proportions for the two populations. Enter negative answer as negative number. X * )
find each value requested for the set scores listed below a. n b. Ex c. Ex^2 d. 10+E(x-3)^2 5,4,6,1,4,5,2,6
Aspirin prevents blood from clotting and helps prevent strokes. The Second European Stroke Prevention Study asked whether adding another anticlotting drug named dipyridamole would make a difference for patients who had already had a stroke. Here are the data on strokes during the two years of the study: Aspirin alone Apsirin & Dipyridamole Number of Patients This test is two-t led. What is the test statistic? -2.700 200 = V 200 Is there a significant difference in the proportion of strokes in the two groups? Test at a = 0.05. Round your answers to three decimal places, and round any interim calculations to four decimal places. #v Fill in the hypotheses below where p₁ denotes the proportion of patients in the aspirin group who suffered a stroke and på denotes the proportion of patients in the aspirin & dipyridamole group who suffered a stroke. Ho: P₁ Ha: P₁ Number of Strokes P₂ 60 P₂ 86 Using your answer from the previous question, find the p-value. ▼ Part 2 of 4 Part 3 of 4
Please solve for A, B, and C
need answer and all the work
You are testing the claim that the proportion of men who own cats is larger than the proportion of women who own cats.You sample 90 men, and 50% own cats.You sample 130 women, and 15% own cats.Find ¯p (p-bar), as a decimal, rounded to two decimal places.
A certain drug causes liver damage in 15% of patients. Suppose the drug is to be tested on 120 patients. Let: X = the number of patients who experienced liver damage from the drug. sample proportion of patients who experienced liver damage from the drug. 120
A random sample of 64 students at a university showed an average age of 25 years and a sample standard deviation of 2 years. The 98 % confidence interval for the true average age of all students in the university is * 20.5 to 29.5. O24.4 to 25.6. 23.0 to 27.0. O 20.0 to 30.0.
How would I identify the p-value?